package com.atguigu.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.ProductConstant;
import com.atguigu.common.to.SkuHasStockVo;
import com.atguigu.common.to.SkuReductionTo;
import com.atguigu.common.to.SpuBoundsTo;
import com.atguigu.common.to.es.SkuEsModel;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.product.dao.SpuInfoDao;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.feign.CouponFeignService;
import com.atguigu.gulimall.product.feign.SearchFeignService;
import com.atguigu.gulimall.product.feign.WareFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.spuvo.*;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StringUtils;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

@Slf4j
@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {
    @Autowired
    private SpuInfoDescService spuInfoDescService;
    @Autowired
    private SpuImagesService imagesService;
    @Autowired
    private AttrService attrService;
    @Autowired
    private ProductAttrValueService attrValueService;
    @Autowired
    private SkuInfoService skuInfoService;
    @Autowired
    private SkuImagesService skuImagesService;
    @Autowired
    private SkuSaleAttrValueService skuSaleAttrValueService;
    @Autowired
    private CouponFeignService couponFeignService;

    @Autowired
    private BrandService brandService;
    @Autowired
    private CategoryService categoryService;
    @Autowired
    private WareFeignService wareFeignService;
    @Autowired
    private SearchFeignService searchFeignService;


    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * //todo 高级部分完善
     * 保存很多东西，需要用事物
     *@GlobalTransactional
     * @param vo
     */
    //Seata_AT 分布式事物
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {
        //1.保存spu基本信息-`pms_spu_info`
        SpuInfoEntity infoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo, infoEntity);
        //只有时间createTime updateTime 这两个字段不一样
        infoEntity.setCreateTime(new Date());
        infoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(infoEntity);
        //2.保存spu的描述图片 -pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        //这个id不是自增，需要从上面保存spu基本信息后获取
        descEntity.setSpuId(infoEntity.getId());
        //将集合转成字符串用分隔符拼接
        descEntity.setDecript(String.join(",", decript));
        spuInfoDescService.saveSpuInfoDesc(descEntity);
        //3.保存spu图片集合--pms_spu_images
        List<String> images = vo.getImages();
        imagesService.saveImages(infoEntity.getId(), images);

        //4.保存spu的规格参数;  `pms_product_attr_value`
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr -> {
            ProductAttrValueEntity valueEntity = new ProductAttrValueEntity();
            //一样的字段可以用属性对拷
            valueEntity.setAttrId(attr.getAttrId());
            //查询名字
            AttrEntity attrEntity = attrService.getById(attr.getAttrId());
            valueEntity.setAttrName(attrEntity.getAttrName());

            valueEntity.setAttrValue(attr.getAttrValues());
            valueEntity.setQuickShow(attr.getShowDesc());
            valueEntity.setSpuId(infoEntity.getId());
            return valueEntity;
        }).collect(Collectors.toList());
        attrValueService.saveProductAttr(collect);
        //5.保存spu的积分信息  sms_spu_bounds  跨数据库保存
        Bounds bounds = vo.getBounds();
        SpuBoundsTo spuBoundsTo = new SpuBoundsTo();
        BeanUtils.copyProperties(bounds, spuBoundsTo);
        spuBoundsTo.setSpuId(infoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundsTo);
        if (r.getCode() != 0) {
            log.info("远程保存积分信息失败，状态码为==>{}", r.getCode());
        }


        //5.保存当前spu对应的所有sku信息
        List<Skus> skus = vo.getSkus();
        if (!CollectionUtils.isEmpty(skus)) {
            skus.stream().parallel().forEach(item -> {
                //选出默认图片
                String defaultImg = "";
                for (Images image : item.getImages()) {
                    if (image.getDefaultImg() == 1) {
                        defaultImg = image.getImgUrl();
                    }
                }
                //private String skuName;
                //private BigDecimal price;
                //private String skuTitle;
                //private String skuSubtitle;
                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                //只能对拷上面四个相同的属性
                BeanUtils.copyProperties(item, skuInfoEntity);
                skuInfoEntity.setBrandId(infoEntity.getBrandId());
                //三级分类id
                skuInfoEntity.setCatalogId(infoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(infoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);
                //保存sku之后就会生成自增id
                //5.1 sku的基本信息 pms_sku_info
                skuInfoService.saveSkuInfo(skuInfoEntity);

                Long skuId = skuInfoEntity.getSkuId();
                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                    //过滤掉不为空的图片  返回true就是需要，false就是剔除
                }).filter(entity -> !StringUtils.isEmpty(entity.getImgUrl()))
                        .collect(Collectors.toList());
                //5.2 sku的图片信息  pms_sku_images
                skuImagesService.saveBatch(imagesEntities);
                //5.3 sku的销售属性的信息 pms_sku_sale_attr_value
                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity attrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, attrValueEntity);
                    attrValueEntity.setSkuId(skuId);
                    return attrValueEntity;
                }).collect(Collectors.toList());
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);

                //5.4 sku的优惠满减等信息； 跨数据库 gulimall_sms
                // 对应的表 打折表 sms_sku_ladder  满减表 sms_sku_full_reduction  会员价格表 sms_member_price
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item, skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                //满几件或者满减是或者关系，满足之一就有意义

                if (skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) == 1) {
                    R r1 = couponFeignService.saveSkuRduction(skuReductionTo);
                    if (r1.getCode() != 0) {
                        log.info("远程保存sku优惠信息失败，状态码为==>{}", r.getCode());
                    }
                    System.out.println("保存成功");
                }
            });
        }


    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity infoEntity) {
        this.baseMapper.insert(infoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();
        String key = (String) params.get("key");
        //内嵌的条件用and加lambda函数，外部的直接eq就可以
        if (!StringUtils.isEmpty(key)) {
            wrapper.and((w) -> {
                //这两个条件是或者关系需要写在内部，不能直接拼接
                w.eq("id", key).or().like("spu_name", key);
            });
        }
        String status = (String) params.get("status");
        if (!StringUtils.isEmpty(status)) {
            wrapper.eq("publish_status", status);
        }
        //品牌id和分类id不等于0
        String brandId = (String) params.get("brandId");
        if (!StringUtils.isEmpty(brandId) && !"0".equalsIgnoreCase(brandId)) {
            wrapper.eq("brand_id", brandId);
        }
        String catelogId = (String) params.get("catelogId");
        if (!StringUtils.isEmpty(catelogId) && !"0".equalsIgnoreCase(catelogId)) {
            wrapper.eq("catalog_id", catelogId);
        }
        //status:
        //key:
        //brandId: 1
        //catelogId: 225
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );
        return new PageUtils(page);
    }
    @Override
    public void up(Long spuId) {

        //1.查出当前的spuId对应的所有的sku信息，品牌的名字
        List<SkuInfoEntity> skus = skuInfoService.getSkusBySpuId(spuId);
        List<Long> skuIdList = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());
        //todo 4.查询当前sku的所有可以被用来检索的规格属性
        List<ProductAttrValueEntity> baseAttrs = attrValueService.baseAttrlistforspu(spuId);
        //收集spuId对应的属性所有id
        List<Long> attrIds = baseAttrs.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());
        //找到所有能够支持搜索的attr_id
        List<Long> searchAttrIds = attrService.selectSearchAttrIds(attrIds);
        //找出所有可以搜索的属性
        Set<Long> idSet = new HashSet<>(searchAttrIds);

        List<SkuEsModel.Attrs> attrsList = baseAttrs.stream()
                .filter(item -> idSet.contains(item.getAttrId()))
                .map(item -> {
                    SkuEsModel.Attrs attrs1 = new SkuEsModel.Attrs();
                    BeanUtils.copyProperties(item, attrs1);
                    return attrs1;
                }).collect(Collectors.toList());
        //todo 1.发送远程调用，库存系统是否有库存

        Map<Long, Boolean> stockMap = null;
        try {
            R r = wareFeignService.getSkusHasStock(skuIdList);
            //toMap 定义key和value的两个函数getSkuId 作为key  getHasStock作为value
            TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>(){};
            stockMap = r.getData(typeReference).stream()
                    .collect(Collectors.toMap(SkuHasStockVo::getSkuId, item -> item.getHasStock()));
        } catch (Exception e) {
           log.error("库存服务异常，原因是==>{}",e);
        }
        //2.封装每个sku信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProducts = skus.stream().map(sku -> {
            //组装需要的数据
            SkuEsModel esModel = new SkuEsModel();
            //拷贝相同的属性字段
            BeanUtils.copyProperties(sku, esModel);
            //需要单独处理的字段
            //skuPrice , skuImg
            esModel.setSkuPrice(sku.getPrice());
            esModel.setSkuImg(sku.getSkuDefaultImg());
            // hasStock , hotScore
            if (finalStockMap == null) {
                esModel.setHasStock(true);
            }else{
                esModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            }

            //todo 2.热度评分 ，0
                //这里暂时简单给个0
            esModel.setHotScore(0L);
            //todo 3.查询品牌和分类的名字信息
            //brandName  brandImg
            BrandEntity brand = brandService.getById(esModel.getBrandId());
            esModel.setBrandName(brand.getName());
            esModel.setBrandImg(brand.getLogo());
            //cataLogName
            CategoryEntity category = categoryService.getById(esModel.getCatalogId());
            esModel.setCatalogName(category.getName());
            //设置检索属性
            esModel.setAttrs(attrsList);

            /**
             * private List<Attrs>attrs;
             *   @Data
             *     public static class Attrs {
             *         private Long attrId;
             *         private String attrName;
             *         private String attrValue;
             *     }
             */
            return esModel;
        }).collect(Collectors.toList());

        //todo 5.将数据发送给es进行保存：gulimall-search:
        R r = searchFeignService.productStatusUp(upProducts);
        if (r.getCode()==0){
            //1.远程调用成功
            //todo  6.修改spu的上架状态
            baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        }else {
            //2.远程调用失败
            //todo  7. 重复调用 ？ 接口幂等性；重试机制？
            /**
             * feign的调用流程
             * 1.构造请求数据，将对象转为json
             * 2.发送请求进行执行
             */
        }
    }

    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {
        SkuInfoEntity skuInfoEntity = skuInfoService.getById(skuId);
        SpuInfoEntity spuInfoEntity = getById(skuInfoEntity.getSpuId());
        return spuInfoEntity;
    }
}